Brake-shoe.



I PATEN'TED DEC. 11, 1906.

H. K. GILBERT. BRAKE SHOE.

APPLICATION FILED DBO. 19,1905

PATENTED DEG-'11, 1906. I H. K. GILBERT.

BRAKE SHOE. APPLIUATION FILED DBO. 19,1905.

' 2 SHEETS-SHEBT 2.

- INVENTOR Qzu;

HENRYK. GILBERT, OF CHICAGO, ILLINOIS, ASSIGNOR o AMERICAN BRAKE SHOE (it FOUNDRY QOMPA KY,

To all whom/it may concern;

Be it known that 1,,HENRY K. GILBERT,"8, citizen of thelUnited States, residing at Chi cage, in the State of Illinois,'-have invented a certain new and Brake-Shoes, of which the following: is a end section,

: of steel It is 'sist of strips of wrou the body portion.

, Which-'7 modified form'ofshoe';

specifieation.

.1 The invention relates to brake shoes of the type having a back portion of tough reinforcing metaland The objects f the invention arei-toprovlde a brake shoe of this general type in which the backingpiece serves not only as a truss for stiffening and strengthening the body, but also serves as a support for the key lug, and to provide a shoe inwhich-the keyingis made of malleable metal; and supported by the back portionand by an extended part of The I invention isillus pan-ying drawings, in

trated j in the acco Figure 2 is" a longitudinal section through Fiilllefl onthe line (2) 1(2) j gure 3. is a similar section through a g Fi e 1 on'theline (4)44) and ,igures 5,:6 and 7; are respectively a plan, and oentral l'transverse section of amodifiedform of shoeo As shown in, the drawings, there are three essential arts to applicants brake shoe, viz -thetidy-portion 5 the two longitudinal stifiening backv ie'c'es'fi and .thepart 7 whichwill be terme the key lug. The parts 6 and? are composed'of malleable metal such as wrought iron or steel and are secured in their positions by casting the body portion5 about them. The key in? 7 is preferably a section from a commercia square tube dplaced at the cox-her of the in position by an extended body portion which exlug and by a porshoe and is hel portion 8 of he cast tends over the top'o'f the tion 9 of the cast bod portion which isinside pieces 6 asshown conht metal in cross section of the shape shown in Figure 4. This cross section may be varied, however, and may be s uare or of some other sha e, if desired. These strips 6 are placed flatwise in the body portion of the shoe as shown Figure 2. 7 At of the lug. The bac Specification Letters Patent: Application filed December 19,1905; Serial'Nq. 292,421. I

- useful Improvement in a e a body portion secured, thereto by casting it about the back portion.

6 .4 isia' transverse section thi ough tion is comprehended A. CORPORATION OF N EW;

I latented Dec, ,1 1,1966;-

the right hand given-a twist and outside of, the body of the shoe, is curved over, passing throughthe projecting body J I the corners of the key lug-7 portion 8 near and is turned down at the left hand end-adjaend of the shoe the rod turned up so that it passes cent to thestarting end, so that the two ends are embedded in the cast meta'l.- This-arrangement may be modifiedas shown in Figupper projecting body portion of the part. 8, the essentialthing beingthat the two ends wherever they may be 'becovered and so. firmly held by the cast metal. The two back iecesfi are spaced far enough apart to avoid interferingwith the key "w liichr-is to pass through t-he key lug 7 1 by the abovecons'tru'ction a strong keylug of a metal different from the body is-secured and that-such lugby virtue of the supporting pieces fi'an'd the engagingportions oft is cast ,metal 8 and 9 is as securely held as ifintegral v with the cast or body'emrtion. "(The passing t of the back'pie'ces 6 ou'gh' the portion 8 also serves to materially stirl'eiisuchprdecF" ing portions, especially against'fa long1tu nal blow which otherwise displace or he preferred arrangement break the lug.-

of the part 6 is as.

that the strip might be reversed in and passed throu h the body of t edgewise instead o fiatwise. 1 This modifies-'- by my invention.

In Figures 5, 6 and7, still another modification is shown. In this form of shoe Rein; gle reinforcing strap 13 is used, which strap passes three times through the cast body of the shoe and 'twice ,t rou shown in Figure 5, the truss 14 'startsat the right hand end the body of the shoe, emerges therefrom, passes through the liig- 15 and returns into the body of the shoe at the shown, but ity is evident position e shoe 35 ure 3-,and' the two ends may be placed in the- 'It wilibe seen that h' the lug." As

point 16! The strap then crosses to the right as hooked soas to embrace theadjacent end of the strap as at 19. It is not-necessary thatthe straps have this hooked engagement,

l l as it is apparent that the straps might end as and prevents the pulling out of the ends of the strap. A In Figure 7, which is a cross section .at the center of zt-he shoe of Figure 5, the location Ofthediffer'en-t sections of the strap is clearly indicated, the three lower sections being the section shown. in dotted, lines in Figure 5.

I 5 Having thus described my invention and illustrated its use, whatl claimas new, and

. the body at its base and embraced by an extended portion'of such body and a malleable desire to secure by Letters Patent, is the fol-,

lowing 1. In combination a brake shoe comprising a cast body, a malleable key lug and a malleable back piece adapted to support the podyportion and theupper part of the key 2. Incombmationa brakeshoe-oomprising a cast body, a malleable key luggimbraced by the body ortion and amallea back piece embedde longitudinally in the body-portion 3nd also in an extended part of the body portion adjacent tothe top of the key lug.

- 1 3 Inoo-rnbination-a brake shoecomprising a body,

a malleable key lugsecured in the body ortion at its base and embraced by an exten edv .ontion of such body portion aiid a malleablgback piece embedded longitudinallyin the main body portion and having an arched portion ,passing through the ex.-

.tended body portion adjacent to the top of the key lug. I v

4. n combination a brake shooeomprising a cast body, a malleable key lug secured in hav' exte iiged partof metal body portion and a lug therefor c'ompnsin a sectionof malleable pipe.

6. n combination a brake shoe comprisin a cast body portion, a malleable key lug an a air of malleable back pieces. on opposite si es ofthe body portion adapted to stiffen such bodyportion and hold the key lug at the top thereo 1 7..v Incombination a brakeshoe .eomprisin a cast body. ortion,a malleable key lug, in "so a pairofma cable back pieces of rectangular cross section embedded in opposite sides .of the body portion and extendmg adjacent the top and bottomofthekey lug and adapted .to secure such key lug.

8. In combination a brake shoe comprising a cast body portion, a malleable keylug embedded in the top .01 the body .portion and its upper or-tion surrounded by an e body portion, and ,a pair of malleable back pieces embedded .on op. 0- site sides of the body .portion and .arche so as to extend through the extended art of the body ortion adjacent to the top 0 the lug.

9. Il ncombination a brake shoe comprising a cast body portion, a malleable key lug, and

a pair of malleable back pieces embedded edgewise in the body portion and located on opposite sides thereof and adapted .to stiffen such body portion and to engage and secure the upper portion of the ke, lug.

In testimony whereof have hereunder si ned my name in the presence of the two su scribed witnesses.

HENRY K. GILBERT. Witnesses:

PAUL CARPENTER ALBERT GRANT 1' LEE.

wry- 

